Kotlin imports of top-level functions and object members never resolve (import recall 62%) #3596

Problem

A Kotlin import names a declaration by package + name, and the file it lives in doesn't have to be named after it. The engine resolves the last segment as a file stem, so two common shapes never link:

• Top-level functions and properties: import com.squareup.kotlinpoet.asClassName lives in a file with another name (e.g. ClassNames.kt).
• Object/companion members: import com.squareup.kotlinpoet.metadata.classinspectors.ClassInspectorUtil.JAVA_DEPRECATED. The member retry (imports_may_name_member) is Java-only.

Measured

tests/tools/import_graph_accuracy.py kotlin (square/kotlinpoet, added in #3594): precision 100%, recall 62.1%, 143 missed imports. For example, ElementsClassInspector.kt → metadata/KotlinPoetMetadata.kt and classinspectors/ClassInspectorUtil.kt.

Fix direction

1. Set imports_may_name_member: True for Kotlin. Same retry as Java: drop up to 3 trailing segments. This handles Util.X and nested classes.
2. For a top-level function or property, use what the scan already knows. Each parsed file has its function names, and a Kotlin file's directory usually mirrors its package. Resolve a.b.name to the file under a …/a/b/ directory that declares a function named name; several candidates draw no edge (Dependency Attribution Error duplicate filenames #261).

Check both with import_graph_accuracy.py kotlin --samples 10.